<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="http://www.tmooc.cn">
  用户名:<input type="text" name="username" maxlength="5" value="asd" readonly
             placeholder="用户名"><br>
  密码:<input type="password" name="password" placeholder="密码"><br>
  性别:<input type="radio" name="gender" checked value="m" id="r1">
      <label for="r1">男</label>
      <input type="radio" name="gender" value="w" id="r2">
      <label for="r2">女</label><br>
  兴趣爱好:<input type="checkbox" name="hobby" value="cy" id="a1">
          <label for="a1">抽烟</label>
          <input type="checkbox" name="hobby" value="hj" id="a2">
          <label for="a2">喝酒</label>
          <input type="checkbox" name="hobby" value="tt" id="a3">
          <label for="a3">烫头</label><br>
  生日:<input type="date" name="birthday"><br>
  靓照:<input type="file" name="picture"><br>
  所在地:<select name="city">
            <option value="beijing">北京</option>
            <option value="shanghai">上海</option>
            <option selected value="guangzhou">广州</option>
        </select><br>
  <input type="submit" value="注册">
  <input type="reset" value="重置">
  <input type="button" value="自定义按钮">
  <hr>
  <button type="submit">注册</button>
  <button type="reset">重置</button>
  <button type="button">自定义按钮</button>
</form>
</body>
</html>